Steam-pressure and water-level recorder for boilers



L t e e h s R t e e h S 2 S I E L M W m d O M 0 W STEAM PRESSURE ANDWATER LEVEL RECORDER FOR BOILERS. No. 495,815.

Batented Apr. 18, 1898.

INVENTOR I .4 TTORNE Y8.

WITNESSES m: mums Pzrzns co. PHOYQLITNOY, wnmwcnon. n. c.

2 Sheets-Sheet 2.

(No Model.)

W. M. LEWIS. STEAM PRESSURE AND WATER LEVEL RECORDER FOR BOILERS. No.495,815.

Patented Apr. 18,1893.

INVENTOH Clock 74 0 7? A TTOHNEYS.

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NITED STATES PATENT Onnicn.

WVILLIAM MORGAN LEYVIS, OF THURBER, TEXAS.

STEAM-PRESSURE AND WATER-LEVEL RECORDER FOR BOILERS.

SPECIFICATION forming part of Letters Patent No.4=95,815, dated April18, 1893.

Original application filed September 3, 1891, Serial ITO-404.658.Divided and this application filed May 8, 1892. $erial No. 431,627. (Nomodel.)

To aZZ whom i2; may concern.-

Be it known that I, WILLIAM MORGAN LEWIS, of Thurber, in the county ofErath and State of Texas, have invented a new and Improved Steam-Pressure Recorder for Boilers, of which the following isa full, clear,and exact description.

This application forms a division of the original application forLetters Patent, Serial No. 404,658, filed by me September 3, 189] andthe device for recording the water level of the boiler hereinafterreferred to, forms the subject matter of the said original application.

The object of the invention is to provide a new and improved steampressure recorder for boilers, which is simple and durable inconstruction, very effective in operation, and arranged to automaticallyrecord the pressure of the steam in the boiler for a given period.

The invention consists of certain parts and details, and combinations ofthe same, as will be hereinafter described and then pointed out in theclaims.

Reference is to be had to the accompanying drawings forming a part ofthis specification, in which the same letters of reference indicate thesame or corresponding parts in all the figures.

Figure 1 is a sectional side elevation of the improvement. Fig. 2 is asectional plan view of the same on the line 2-2 of Fig. 1 the springsbeing removed to show the pencils; and Fig. 3 is a sectional sideelevation of part of the improvement on the line 33 of Fig. 2.

My improved steam pressure recorder for boilers is provided with aclosed vessel A, connected near its upper end by a pipe B, with thesteam compartment of the boiler, and at its lower end by a pipe 0, withthe water compartment of the boiler. The vessel A is so arrangedrelative to the boiler that the water level in the vessel A correspondswith the level of the water in the boiler, the vessel preferablyextending throughout ihe height of the boiler and forming part of thesame or placed a suitable distance therefrom at aconvenient point. I

On the top of the vessel A is arranged a cylinder D, extendingupwardlyand in which is fitted to slide a piston E, provided with apiston rod F, extending through a suitable stuffing box in the top ofthe cylinder D. The upper end of the piston rod extends into a casing G,supported on a suitable platform A, held on a framework arranged on topof the vessel A. The extreme upper end of the piston rod F is formedwith an enlargement F, connected with one end of a spring H, coiled inthe lower part of the casing G, said spring being attached to the bottomof the casing.

From the front part of the enlargement F of the piston rod F extends apointer F indicating steam pressure on the graduation G, fixed on thecasing G. From the rear part of the enlargement F extends transversely,a spring pressed pencil I, see Fig. 2, passing through a vertical slotJ, formed in a transparent cover J of a clock-work K, of any approvedconstruction. The hour shaft K, of the clock-work K carries a dial L,arranged to make one full rotation either during twelve or twenty-fourhours, the said dial being correspondingly divided into twelve ortwentyfour equal sector parts L,and with a double graduation L and Ldistinguished from one another by Roman and Arabic numerals and bothindicating hours of the sector parts L, as hereinafter more fullydescribed. When the clock-work K is wound up, the dial L revolves in thedirection of the arrow a (on Fig. 1). A pointer K fixed on the casing ofthe clockwork K indicates the correct hour of the day on the graduationL of the said dial. Thus, as shown in Fig. 1, the hour of the day is oneoclock. The pressure of the steam in the vessel A exerts its influenceon the piston E so that the latter is moved upward so that the pointer Findicates the pressure in pounds on the graduation G. At the same time,the pencil I marks a line on the dial L, which latter, on account of itsrevolving according to time, notes the pressure at the proper time. Thedial L is preferably made of slate, so that the markings can be wipedofi whenever desired. The spring H insures a return movement of thepiston E and connected parts according to the diminishing pressure ofthe steam in the vessel A. Within the vessel A is also arranged a floatN, adapted to rise and fall with the level of the Water in the vessel A,the said float being guided on suitable guide rods N, arranged withinthe vessel A. The float Nis provided with an upwardly-extending rod Npassing through a suitable stuffing box in the top of the vessel A, theupper end of the said rod being connected with the end of a band or belt0, passing over the rim of a Wheel P, and fastened thereto, the saidwheel being secured on a shaft P and mounted to turn in suitablebearings on the platform A.

A spiral spring Q, is fastened with one end tothe wheel P and with itsother end on the platform A, (see Fig. 1) the said spring serving torotate the wheel P when the water rises in the vessel A and the float Nmoves upward. The spring uncoils when the water falls, by the weight ofthe float N descending with the falling water. On the shaft P is securedalso a gear wheel R, meshing into a rack S, supported from ahorizontally-arranged slide S, mounted to slide in suitable bearingsarranged in the casing U, supported by the casing G, as will be readilyunderstood by reference to Fig. 2.

On the front of the slide S is arranged a pointer S indicating theheight of the water in the boiler on a graduation U',formed on thecasing U. On the rear end of the slide S is supported a spring pressedpencil T, extending through a horizontally arranged slot J formed in thecover J. The inner end of the pencial T is adapted to indicate on thedial L, and travels in a horizontal line standing at right angles to.the vertical line-in which travels the pencil I previously mentioned.

On the shaft K of the clock-work K is hung loosely an indicator V, madein the shape of a sector corresponding in size to one of the parts L. ofthe dial L. The indicator V is provided with two sets of graduations Vand V corresponding to the graduations G and U, respectively, of whichthe former indicates the boiler pressure and the other the height of thewater level in feet and subdivisions of feet in the boiler and vessel A.On the indicator V is arranged a graduation V indicating thesubdivisions of five minute spaces of one hour.

It is understood that the graduation V on the indicator V indicates aboiler pressure corresponding to that of graduation G, and is used toread off the boiler pressure marked by the pencil I on dial L at any ofthe sector parts L so marked by the said pencil. In a like manner, thegraduation V indicates height of water level in feet and subdivisions offeet corresponding to that of the graduation U, and is used to read offthe height of the water level on any of the sector parts L of the dial Lin case the latter is already marked by the pencil T. The graduation Lis used in connection with the graduation V of the indicator V to readoff the hour of the day during which the pencil T marks thecorresponding sector part L, and the graduation L indicates in a likemanner, the hour of the day during which the pencil I made its mark onthe corresponding sector part.

As shown in Fig. 1, the Roman numerals on the indicator V and denoted byV represent the height of the water level in feet in the boiler, whilethe Arabic numerals indicate the pressure of the steam in pounds and aredenoted by V, see Fig. 1.

The operation is as follows: When the boiler is in use and theclock-work K is wound up and set going, then the dial Lrotates and thepiston E and the float N move up and down, according to the increased ordiminished pressure of steam and increased or diminished supply of waterin the boiler. The movement of the piston E is indicated by the pencil Ion the dial L, and the movement of the float N is also indicated on thesaid dial by the pencil '1. At the same time the pressure of the steamin the boiler can be read on the graduation G at the pointer F and theheight of the water in the boiler can be read on the graduation U at thepointer 5 Now, when it is desired to read the time of a certain boilerpressure indicated by the pencil I on the dial L, then the operatorshifts the indicator V so that its right hand edge intersects thedesired point of time on the graduation section L and the amount ofboiler pressure can be read on the graduation V as the lattercorresponds with the graduation G indicating boiler pressure, as aboveexplained. At the same time the center radial line of theindicator-indicates the hour of the dial L and subdivisions of the hourare indi cated by the graduation V In a like manner, the height of thewater in the boiler at a certain time can be read by the indicator V onthe dial L by shifting the said indicator so that the left hand edgeintersects the desired point of the line made by the pencil T, thegraduation V indicating the height of the water in feet and also thegraduation V indicates the time of the dial L Thus, it will be seen thatno single steam gage or water gage is required for the boiler, as thedevice indicates at sight the steam pressure and the height of the waterin the boiler, and it further furnishes indicator diagrams of the steampressure and the height of the water in the boiler.

By this device the owner of a boiler can atany time find whether properattendance has been given to the boiler in furnishing the same with thenecessary amount of water, and whether the attendants keep the firesunder the boiler in proper order to hold a sufficient and constant steamsupply. The pencils I and T are preferably of different colors, say red,and blue respectively, to readily trace their markings on the slatedia1,the red color line representing the steam and the blue line thewater in the boiler.

Having thus fully described my invention, I. claim as new and desire tosecure by Letters Patent- 1. In a device of the class described, the

combination with a dial and a clock-work for driving the said dial, ofan indicating pencil adapted to indicate on the said dial means foroperating the pencil from the boiler and a graduated indicator hungloosely on the said dial and adapted to indicate the time of themarkings by the said pencil on the said dial, substantially as shown anddescribed.

2. In a device of the class described, the combination with anindicating pencil controlled by the steam pressure in the boiler, of arevoluble dial on which the said pencil is arranged to mark, aclock-work for driving the said dial, and a spring retracted piston,substantially as described, for imparting motion to the said pencil bythe increasing or diminishing pressure of the steam in the boiler,substantially as shown and described.

3. In a device of the class described, the combination with a vesselconnected with the boiler, of a cylinder opening into the said vesseland containing a piston, and a spring pressed piston rod, of a pencilheld on the said spring pressed piston rod, a revoluble dial .on whichthe said pencilis arranged to mark, and a graduated indicator toindicate the time of the markings by the pencil on the dial and aclock-work for driving the said dial, substantially as shown anddescribed.

l. In a device of the class described, the combination with a vesselconnected with the boiler, of a cylinder opening into the said ves- Sciand containing a piston, and a springpressed piston rod carrying apointer, of a pencil held on the said spring-pressed piston rod, arevoluble dial on which the said pencil is arranged to mark, and aclock-work for driving the said dial, and a graduated indicator hungloosely on the said dial and adapted to indicate the time of themarkings by the said pencil on the said dial, substantially as shown anddescribed.

5. In a device of the class described, the combination with aspring-pressed piston controlled by the steam pressure in the boiler, ofa pointer held on the outer side of the upper end of the piston rod ofthe said piston, a fixed casing having a vertical transversely graduatedsurface on which the said pointer indicates, a pencil supported on theinner side of the upper end of said piston rod, a dial mounted to turnand on which the said pencil is arranged to mark, and a clock-work fordriving the said dial, substantially as shown and described.

6. In a device of the class described, the combination with aspring-pressed piston controlled by the steam pressure in the boiler, ofa pointer held on the piston rod of the said piston, a fixed casinghaving a graduation on which the said pointerindicates, a pencilsupported on the said piston rod, a dial mounted to turn and on whichthe said pencil is arranged to mark, a clock-work for driving the saiddial, and a graduated indicator hung loosely on the said dial andadapted to inclicate the time for the indicating line marked by the saidpencil on the said dial, substantially as shown and described.

7 The combination with the clock-work the graduated dial rotated therebyand thesteam pressure and water level pencils working on the facethereof and operated from the steam and water space of the boilerrespectively, of the indicator hung loosely on the axis of the dial andhaving two sets of graduations, one for each pencil, substantially asset forth.

8. The combination with the clock work the graduated dial rotatedthereby and the steam pressure and water level indicating pencilsmovable on the face of the dial in planes at right angles to each otherand controlled respectively from the steam and water space of theboiler, of the indicator hung loosely and provided with two sets ofgraduations, one for each pencil, substantially as set forth.

9. The combination with the clock work, its casing having a pointer Kand the dial on the hour shaft provided with radial graduations and twosets of numerals, the outer set of which is read in connection with thesaid pointer, of the two pencils working on the face of the dial andoperated respectively from the steam and water space of the boiler, andthe loosely hung indicator having three sets of graduations reading asdescribed, substantially as set forth.

10. A steam pressure and water level recorder for boilers, comprising avessel connected at its upper and lower ends with the upper and lowerportions of the boiler and provided with a steam cylinder communicatingwith its upper portion above the water level, a framework above thevessel, a clockwork having a vertically rotating graduated dial, apiston in said steam cylinder provided with an upwardly extending rodprovided with a pencil to work on the dial, a horizontally slidin gpencil also marking on the dial, and a float in the water space of saidvessel and connected with the horizontally working pencil; whereby thesteam pressure and water level will be simultaneously recorded on thedial, substantially as set forth.

11. The combination with the dial, and its clockwork, of two graduatedsurfaces projecting vertically and horizontally across the dial from itsaxis, and two pencil carriers each sliding parallel to said surfaces andprovided with pointers working thereon and with pencils marking on thedial, operative connections between the said pencils and the steam andwater spaces respectively of the boiler, and the loosely hung indicator;whereby the steam pressure and water level may be read from the pointersand graduated surfaces and the times of the pencil markings be read inconnection with the indicator, substantially as set forth.

VILLIAM MORGAN LEWIS.

Wi tn esscs M. LEWIS, THOMAS PARKER.

IIO

